"Discussions are at an early stage and it is not yet clear if there is a basis for an agreed transaction," Cermaq said in a statement. "Clarification of whether there is a basis to proceed from the opening discussions is expected over the next few weeks," it said.
Shares in Cermaq rose 8.4 percent at the Oslo bourse to NOK 103 at 0925 GMT.
Cermaq is the world's second largest fish feed producer and among the biggest farmers of salmon and trout. It has fish farming operations in Norway, Chile, Canada and Scotland.
Source: Aftenposten